Blar i NTNU Open på forfatter "Tranberg, Anders"
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Chiral and deconfinement transitions in a magnetic background using the functional renormalization group with the Polyakov loop
Andersen, Jens Oluf; Naylor, William; Tranberg, Anders (Journal article; Peer reviewed, 2014)We use the Polyakov loop coupled quark-meson model to approximate low energy QCD and present results for the chiral and deconfinement transitions in the presence of a constant magnetic background B at finite temperature T ... -
Inverse magnetic catalysis and regularization in the quark-meson model
Andersen, Jens Oluf; Naylor, William; Tranberg, Anders (Journal article; Peer reviewed, 2015)Motivated by recent work on inverse magnetic catalysis at finite temperature, we study the quark-meson model using both dimensional regularization and a sharp cutoff. We calculate the critical temperature for the chiral ... -
Nonperturbative analysis of the electroweak phase transition in the two Higgs doublet model
Andersen, Jens Oluf; Gorda, Tyler; Helset, Andreas; Niemi, Lauri; Tenkanen, Tuomas V.I.; Tranberg, Anders; Vuorinen, Aleksi; Weir, David J. (Journal article; Peer reviewed, 2018)We perform a nonperturbative study of the electroweak phase transition (EWPT) in the two Higgs doublet model (2HDM) by deriving a dimensionally reduced high-temperature effective theory for the model, and matching to known ... -
Quantum corrections to slow-roll inflation: scalar and tensor modes
Andersen, Jens Oluf; Tranberg, Anders; Eriksson, Magdalena Britt (Peer reviewed; Journal article, 2021)Inflation is often described through the dynamics of a scalar field, slow-rolling in a suitable potential. Ultimately, this inflaton must be identified with the expectation value of a quantum field, evolving in a quantum ... -
Stochastic inflation from quantum field theory and the parametric dependence of the effective noise amplitude
Andersen, Jens Oluf; Tranberg, Anders; Eriksson, Magdalena Britt (Journal article; Peer reviewed, 2022) -
The chiral transition in a magnetic background: Finite density effects and the functional renormalization group
Andersen, Jens Oluf; Tranberg, Anders (Journal article; Peer reviewed, 2012)We compute the phase diagram of the quark-meson model at finite temperature, finite baryon chemical potential μ B = 3 μ and constant external magnetic field B, using the functional renormalization group. Our results show ...